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Abstract

Disclosed is a memory device structure that emphasizes its page mode operation. Memory cells are divided into some ISLANDs (or blocks), and each island, comprised of the sense amplifiers and wordlines, is controlled by its own exclusive controller. When the chip is in stand-by state, all the sense amplifiers are activated (not precharged) and act as buffers.

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United States

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English (United States)

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Multiple Active Page Memory

Disclosed is a memory device structure that emphasizes its page mode
operation. Memory cells are divided into some ISLANDs (or blocks), and each
island, comprised of the sense amplifiers and wordlines, is controlled by its own
exclusive controller. When the chip is in stand-by state, all the sense amplifiers
are activated (not precharged) and act as buffers.

Functions of this memory are the following: * Sense amplifiers are normally
active and act as page buffers. * Contents of the data buffers (sense amplifiers)
are changed when the page is "MISS". This action is taken independently from
other islands. The figure shows the structure of the memory device. Example:

If the accessed page is in Island #1, and the sense amplifier of Island #1
does not have the page, then the sense amplifiers are precharged and get the
required page. In this time-frame, sense amplifiers of other islands are kept in
"active" state.